\documentclass{article}

\usepackage{array}
\newcolumntype{C}[1]{>{\centering\let\newline\\\arraybackslash\hspace{0pt}}m{#1}}
\renewcommand{\arraystretch}{2.0}

\begin{document}

\begin{tabular}{|>{\bfseries}C{5cm}|C{1cm}|C{1cm}|C{1cm}|C{1cm}|C{1cm}|C{1cm}|}
	\hline
	Bandwidth (MHz)                               & 1.25 & 2.5 & 5.0 & 10.0 & 15.0 & 20.0 \\
	\hline
	Subcarrier bandwidth (kHz)                    & \multicolumn{6}{c|}{15}               \\
	\hline
	Physical resource block (PRB) bandwidth (kHz) & \multicolumn{6}{c|}{180}              \\
	\hline
	Number of available PRBs                      & 6    & 12  & 25  & 50   & 75   & 100  \\
	\hline
\end{tabular}

\end{document}
